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Rory McIlroy was out early Wednesday morning for a practice round with defending champion Louis Oosthuizen, Masters champion Charl Schwartzel and Darren Clarke (not pictured).
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McIlroy's autograph is in high demand after his win last month at the U.S. Open.
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Phil Mickelson is trying to end his dismal record at the Open, where he only has one top-10 finish in his career.
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Lee Westwood would like nothing more than to win his first major this week in his native England, and he's feeling confident heading into the Open. "I'm happy with all aspects of my game," he said.
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Luke Donald is also riding high with confidence after three wins this season. "This is the most consistent I've been, I think, throughout my whole game, not just around the greens but tee to green it's getting more and more solid, and I think that's been a key to me playing well and notching up some victories," he said.
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Tom Watson stopped on the 18th green to snap a picture. Watson won five Open titles in his career, and he nearly won a sixth in 2009 but lost in a playoff to Stewart Cink.
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Rickie Fowler tied for 14th last year at St. Andrews in his first start at the Open.
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Ernie Els tied for 25th last week at the Scottish Open. It was a good sign for Els, who's been struggling with his game all season.
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Several fans stood out in the gallery on Wednesday.
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Paul Casey is trying to turn around his game after missing four of his last six cuts.
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Padraig Harrington won the Open in 2007 and 2008.
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Zach Johnson got a blast of sand in his face after hitting out of a bunker on No. 6.